9 articles in this issue
Natig Seyidahmadov
To increase the efficiency of gas-lift oil and gas production, it is necessary to improve the operation of compressor stations, namely, to increase the reliability of the gas-motor piston compressor units installed in them. It is found that one of the vul... see more
Dinara Arinova,Borys Uspensky,Konstantin Avramov,Vitaly Povetkin
This paper has suggested a procedure to analyze durability of supporting shafts in eccentric mechanisms based on finite-element modeling. When conducting the analysis, the steady movement of the mechanism is investigated. The analysis of durability is bas... see more
Valeriy Borisenko,Serhiy Ustenko,Iryna Ustenko,Kateryna Kuzma
A method for geometric modeling of the contours of the suction and the pressure side profiles of axial turbomachine blades described by compound curves and formed by two sections has been proposed. Each section of the profile contour was modeled by a curv... see more
Vira ?npilogova,Svitlana Botvinovska,Alla Zolotova,Hanna Sulimenko
The research focuses on solving the problems, related to modeling the second-order surfaces (quadrics), the determinant of which includes tangent cones. All research was performed by the paradigm of using constructive methods of creation of algorithms. Th... see more
Natalia Hrudkina,Leila Aliieva,Payman Abhari,Oleg Markov,Liudmyla Sukhovirska
The possibilities of using an energy method to forecast defect formation in the form of shrinkage depression in the combined extrusion processes have been investigated. We have proposed a mathematical model of the combined radial-reverse extrusion process... see more
Yuriy Petrakov,Mariia Danylchenko,Andrii Petryshyn
A new technology for predicting chatter in turning, based on simulation of the cutting process in time and frequency domains using the Nyquist diagram has been developed. The cutting process is presented as carried out in an elastic closed-loop technologi... see more
Azamat Seitkhanov,Vitaly Povetkin,Birzhan Bektibay,Mukhtarbek Tatybayev,Amina Bukayeva
Hydrotransport equipment of mining and processing plants has low operational reliability, insufficient service life due to intense hydroabrasive wear of the working surfaces of pipelines and pumping equipment, design flaws of some ground pump units and th... see more
Mustafa Babanli,Ramin Karimov,Aydin Bayramov,Ibrahim Isa Abbasov
When refining steel by blowing powders, the ladle lining material plays a serious role. The dependency graphs of the degree of desulfurization on the consumption of silicocalcium powder during blowing in ladles lined with various materials have been prese... see more